Patient-Specific Eye Surgical Laser Control for Efficacy–Stress Balance
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Solution Overview
Problem
Existing eye surgical laser treatments face a conflict between achieving high efficacy in photoablation or photodisruption while minimizing patient stress, with current systems often relying on generic or patient-adapted approaches that do not optimally balance these factors.
Innovation Solution
Adapting the operation of an eye surgical laser based on patient-specific physical parameters, such as reflectivity, moisture content, and optical zone size, to optimize the laser beam characteristics for individual patient needs, thereby balancing efficacy and stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high laser power is used to achieve high efficacy in photoablation or photodisruption, then treatment effectiveness is improved, but patient stress and tissue damage increase
Solution Approach 1:
The patent applies parameter changes by adjusting multiple laser parameters (wavelength, pulse duration, pulse energy, repetition rate) based on patient-specific corneal characteristics. The control device dynamically modifies these parameters to optimize the balance between ablation efficacy and patient comfort, resolving the contradiction between high treatment effectiveness and minimal patient stress
Solution Approach 2:
The system implements dynamics by enabling real-time adaptation of laser parameters during treatment. The control device continuously adjusts laser characteristics based on feedback from corneal imaging and patient response, allowing the treatment to evolve from static generic parameters to dynamic patient-specific optimization, thereby achieving high efficacy with reduced patient stress
2Ease of operation
If generic treatment approaches are used, then treatment simplicity is maintained, but treatment efficacy and patient-specific optimization are reduced
Solution Approach 1:
The system applies self-service by enabling the treatment apparatus to automatically determine and adjust optimal laser parameters based on patient-specific corneal imaging data. The control device autonomously processes topographic information and wavefront data to generate customized treatment protocols, eliminating the need for manual parameter adjustment while achieving superior patient-specific optimization and treatment efficacy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method allows for a patient-specific adjustment of laser beam characteristics to achieve high treatment efficacy with minimal patient discomfort by considering individual patient-specific parameters, ensuring a balanced treatment outcome.
Implementation Method 1
laser pulses effect a photodisruption and/or photoablation in a focus located within the organic tissue in order to remove a tissue, in particular a tissue lenticule, from the cornea
Implementation Method 2
laser pulses effect a photodisruption and/or photoablation in a focus located within the organic tissue in order to remove a tissue
Data Source
AI summary
A method for providing control data of an eye surgical laser of a treatment apparatus is disclosed for a treatment on a human or animal eye. The method optimizes a target conflict between low stress for a patient and efficacy of a laser. The method includes, as performed by a control device, determining a patient-specific parameter set, which relates to at least one physiological characteristic of the eye, determining at least one physical parameter for the eye surgical laser depending on the patient-specific parameter set, wherein the physical parameter relates to a physical characteristic of a laser beam of the laser, and providing control data for controlling the eye surgical laser, which includes the physical parameter.